The northbound migration is spread out — some whales have already passed San Francisco and at least a few have entered San Francisco Bay — but this is the peak period off Southern California.

Most landings are sending boats out daily or on weekends for trips lasting 2-3 hours, but those who'd like a longer adventure might consider joining the Ultimate Whale Watch journey Saturday aboard the Monte Carlo out of 22nd St. Landing in San Pedro.

The trip, a fund-raiser for the American Cetacean Society's Los Angeles Chapter (ACS-LA), is from 8 a.m. to about 5 p.m. and will include a visit to the west end of Catalina. Cost is $71, or $61 for ACS members. Tickets can be purchased online or by calling (424) 266-0516.

Those who live closer to Orange County might consider ACS-OC Around-Catalina adventure on April 1 aboard the Catalina Flyer out of Newport Beach. It'll run from 9 a.m. to about 6 p.m. Departure is from 400 Main St. Cost is $60 for members and seniors, $75 for non-members, and $35 for children 10 and younger. Reservations can be made by calling (714) 375-1192.

Both trips are timed to coincide with the peak period of the northbound migration.